This calculator allows you to convert from Millimeter water (4°C) to Kilogram-force/sq. millimeter and in a reverse direction. To convert from Millimeter water (4°C) to Kilogram-force/sq. millimeter, enter the amount of Millimeter water (4°C) into the first input and to convert from Kilogram-force/sq. millimeter to Millimeter water (4°C), enter the amount of Kilogram-force/sq. millimeter into the second input.